HP UX Common Internet File System (CIFS) Client/Server Software manual Auspex NeTservices

8.3Auspex NeTservices

Auspex markets a NAS server called 4Front NetServer 2000. Auspex is an Advanced Server for UNIX OEM customer of AT&T, and their version of Advanced Server is the NeTservices UNIX/Windows consolidation product, running on UNIX on the 4Front NS 2000 server. AT&T Advanced Server is also the OEM source for HP’s AS/9000 product.

NeTservices runs on a UNIX operating system, but like NetApps and EMC, appears to be a single-purpose NAS server. Thus, NeTservices can provide concurrent file access for Windows and NFS clients, but does not support UNIX users or applications on the server. NeTservices file locking implementation appears to be based upon Advanced Server for UNIX, which provides byte range locking interoperability for Windows and NFS. NFS access must adhere to the advisory locking protocol.

Advanced Server for UNIX also enables oplocks, but for Windows-only client access. However, enabling oplocks automatically disables UNIX/NFS locks.

Based upon Auspex and Advanced Server documentation, NeTservices provides the following file locking ability:

Mandatory Share Mode (Open Mode)	Auspex NeTservices
Lock Windows	Yes
Lock UNIX – no advisory locking	Not Applicable
Lock UNIX – advisory locking	Not Applicable
Lock UNIX/NFS – no advisory locking	No
Lock UNIX/NFS – advisory locking	No
Lock PC-NFS	No
Byte Range Locking
Lock Windows	Yes
Lock UNIX – no advisory locking	Not Applicable
Lock UNIX – advisory locking	Not Applicable
Lock UNIX/NFS – no advisory locking	No
Lock UNIX/NFS – advisory locking	Yes
Lock PC-NFS	No
Oplocks
Break Oplock for Windows access	Yes
Break Oplock for UNIX access – no	Not Applicable
advisory
Break Oplock for UNIX access - advisory	Not Applicable
Break Oplock for UNIX/NFS – no advisory	No
Break Oplock for UNIX/NFS – advisory	No
Break Oplock for PC-NFS	No

Auspex NeTservices provides Mandatory Share Mode (open mode) locking for Windows clients only. CIFS/9000 has a planned enhancement to interoperate Windows Mandatory Share Mode (open mode) locking with UNIX, UNIX/NFS, and PC-NFS.

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